Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5b45fd4d680dca…

MALICIOUS

PDF

47.2 KB Created: 2020-08-11 21:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b717af7b46b4270c2aca3dc53981c99 SHA-1: 608e0bd1b3a1e60c5d2660da6a04a8e93f684893 SHA-256: 7e5b45fd4d680dcaa99adaf69c35c4efe0696024b3ddc77643fa20724f688398
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains this URL and numerous other links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is likely used to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=is%202062%20e250%20br%20specification%20pdf
    • http://files.thgrill.com/uploads/1/3/1/6/131606094/zumusupawome-pamotobimudivam.pdf
    • http://files.aperturedelta.com/uploads/1/3/1/0/131070845/1069530.pdf
    • http://files.bitsbottlesbush.com/uploads/1/3/1/4/131453255/zemijojusas.pdf
    • http://files.gardentogourmet.com.au/uploads/1/3/0/7/130775506/9466237.pdf
    • http://files.spaceliftinteriordesign.com/uploads/1/3/0/9/130969915/4853761.pdf
    • https://cdn.shopify.com/s/files/1/0433/1945/9998/files/22965471376.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/6380490543.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0918/files/61002227346.pdf
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/retegemotef.pdf
    • https://cdn.shopify.com/s/files/1/0441/0828/4056/files/slope_stability_analysis_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/rurigajimefut.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/14007797539.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/54235139370.pdf
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/94717575952.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/derivative_of_inverse_trigonometric_functions_proof.pdf
    • https://cdn.shopify.com/s/files/1/0433/4354/4488/files/zokirane.pdf
    • https://cdn.shopify.com/s/files/1/0438/7025/7320/files/wagisalajenisotusupu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/viziwimobedegabuxomija.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1010/files/adverb_clause_exercises_with_answers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006569.bin
a62106559357334904cd76cac801e64242f9f31474196de616bb2e2ac2188a48
pdf-font-stream PDF embedded font (sfnt) at offset 0x6569 1548 bytes
font_01_sfnt_off00006d51.bin
605d59781b34284348823b810d3bdf55377b0d3ee5758934698cb6dcb76e2127
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D51 5748 bytes
font_02_sfnt_off000080da.bin
57bca14513ef1fde4c79b2d08c57e6f4f499b345e2883b4ce8fabe052b8a375e
pdf-font-stream PDF embedded font (sfnt) at offset 0x80DA 14836 bytes